Web-printing press



May 19, 1925.

H. A. W. WOOD WEB PRINTING PRESS 1912 5 Sheets-Sheet" 1 Swap-6:75@

May 19, 1925. 1,538,151

* H. A. w. woon WEB PRINTING PRESS original' Filed Femm 1912 5Sheets-Sheet 2 May 19, 1925.

l-i. A. w` woon WEB PRINTING APRESS 3 Sheets-Sheet 3 Oi'ginal Filed Feb.7, 1912 Patented May 19, 1925.

UNITED STATES HENRY A. WISE WOOD, OF NEW YORK, N. Y.,

CHINERY CORPORATION,

ASSIGNOR TO WOOD NEWSPAPER MA- OF NEW YORK, N. Y., A CORPORATION FVIRGINIA.

WEB-PRINTING Panss.

Original application filed February 7,

1912, Patent No. 1,327,580, dated .Tauuary 6, 1920. Divided and thisapplication filed November 5, 1917, Serial No. 200,313. RenewedMarchl20, 1924.

To all whom t may concern.'

Be it known that I, HENRY A. lVIsE Woon,

a citizen of the United States, residing at New York, in the county ofNew York and State of New York, have invented a new and usefulTeb-Printing Press, of which the following is a specification.

This is a.v division of my Patent No.

1,327,580, patented Jan. 6, 1920, on a printing press.

This invention relates chiefly to web presses suitable for newspaperwork. The principal objects of the invention are to increase the speed,prevent stops, and improve the quality of the product of such mechanism.l i

Other objects of the invention are to provide simple paper handlingdevices of suoli a character that the slapping of the paper 2o againstthe printing cylinder will be avoided and it will not stick to theplates; to provide for reducing the error-in feeding due to the usualvariation in diameter of impression cylinder; to provide means Wherebythe paper is less liable to break than is the case in machines now onthe market, so that less expensive paper can be used; to provide aconstruction in which twice during each revolution the paper ywill befree of any impression and at liberty to move a little forward orbackward to compensate for the variation in thickness of the blankets,so as to prevent the forwarding of too muchy paper to. the folder whenthe blankets are fat, and too little when they are lean. Another objectof the invention is to provide'for positively driving allpaperpropelling rolls before and after printing and to provide means forpreventing the paper from adhering to the inked printing plates in caseAof a paper break, and following them around into `the `inking rolls,thus avoiding the present great delays which result from the windingV upofthe paper on the inking rolls and the necessity of taking the rollsout and picking oil the paper before starting again. Further objects andadvantages of the invention will appear hereinafter. i

Reference is to be had to the accompanying drawings, in which Fig. l isa diagrammatic view of a four- CID deck rotary printing pressconstructed in accordance with this invention and showing the parts inlongitudinal section;

2 is a sectionl View of a portion of one yof the decks on enlarged'scale showing the guide ngers;

Fig. 3 is a sectional view showing one of the guide fingers;

Fig. 4 is a side view of a device on enlarged scale;

Fig. 5 is a side elevation'on enlarged scale showing a portion of theweb guiding device;

Fig. 6 is an end elevation of the elements shown in Fig. 5;

Fig. 7 is a view similar to Fig. 5 showing another portion of the webguiding device;

Fig. 8 is an end elevation shown in Fig. 7;

Fig. 9 is a longitudinal sectional view on the line 9-9 of Fig. 5showing the bearings for one of the shafts, and

Fig. 10 is a similar view on the line lOlO of Fig. 7.

In the form of the invention shown in the drawings, a main frame 26 isprovided for supporting all the mechanism hereins0 after described. ThisVframe is provided with a plurality of rails 27 arranged in pairs, oneof those of each pair being at a slight elevation above the other. Eachrail supports a carriage or frame 28 mov- 85 able therealong on rollers29 toward and from the center'of the machine. Each pair of these framesand associated elements constitutes a deck of the press.

Mounted in bearings onthe lower part of 90 this frame 26 is a drivingshaft 30 having a gear 3l thereon. Through gears 32 and 33 this drivesthe impression cylinder shaft 34 on which the gear 33 is mounted. Thisgear 33 meshes with a gear 35 fixed to an 95 impression cylinder shaft36, located above the shaft 34 and parallel with it. Arranged preferablyin vertical alignment above these shafts is a series of shaftsdesignated 34, 36, 3423612 342 36", one pair being located. 100 in eachdeck. On these shafts are mounted gears for driving them in acorresponding order designated 33, 35a, 33h, 35", 33 and 35.

portion of `the of the elements ing the form rolls 68.

These gears are of the same diameter and mesh together so that all ofthese shafts are driven at the same speed, the lower ones of each pairin the same direction and the upper ones of each pair in the oppositedirection. To perform a complete printing operation on the web, as willbe obvious, each of these shafts is provided' with an impressioncylinder as 37, 38, 37, 38a, 37b,-

38", 37C, and 38.

On each of the shafts 34, 36, etc. there is a gear (not shown) meshingwith' a gear fixed on a printing cylinder shaft 41. On each of theseshafts 41 is mounted a printing plate cylinder designated as 42 on theright hand side of the lower deck and 43 on the left hand side. Otherplate cylinders 42a,- 433, 42h, 43", 42C, 43, appear in correspondingorder in the' other decks. The par-ts just above described are supportedon the main frame 26. series of webs IRL-Vila, 7b4-IW, are drawnbetween' these printing couples to be printed on both sides as will beexplained more' indetail hereinafter. On each of the shafts 41 there islocated a gear 44 operating a train of gears for driving the inkingmechanism I, includ- Th'e details of these gears neednot be gone into asany ordinary arrangement can be employed. It is to be understoodhowever, that the same arrangement is provided in each of the severaldecks, and that these parts are mounted on the movable frames 28 as willbe obvious from a consideration of the top deck in Fig. 1.

A pressure cylinder 210 is shown for moving the carriage. With thiscylinder arrangement the' attendant need only turn an air cock in orderthat the roller carriage 28 may be moved away and back. It is sometimesdesirable to move it by hand hoi'vever. For this reason a rack 21 isshown fixed on the rail 27 and the carriage is shown as provided with ashaft 212 having a pinion thereon meshing with the rack. This can beused inl emergencies and when'- ever it is not desired to use thevcylinder.

For the purpose of loe-king the movable carriage 28 to rail 27, a yoke214 is mounted on the stationary rail 27 to receive a pin 215 on thecarri-age and stop it. In orderto lock the carriage in its operativeposition it is provided with a projection 216 adapted to enter a slot217 in the stationary frame. In this projection is a shaft 218 havingv asquare end and carrying a pinion' 219 meshing with a vertical rack 220which has a pin 221 on the end for entering ahole 222 inthe stationary,frame Aand hold- .ing the movable carriage in fixed position.

The paper forv'varding` roll 230 between the press and folder is of halfthe diameter of the printing cylinder. In this way it has acircumference exactly the length of one sheet and so will receive theset off of each sheet in exactly the same spot. In. view of the factthat it is now almost universally the custom to have the two followingplates in each plate cylinder alike it will be seen that the set-off ofone sheet will be returned to the next sheet in register and thereforewill be olf-set upon the printed portions and not upon the white spacesas has been the case heretofore. In other words the off-set isregistered and is therefore hidden. This is carried out in' the case ofeach roll between the press and folder. This forwarding roll 230 as wellas the forwarding roll 231 is driven positively from the gear 44 bymeans of gearing and 233. In this way the rolls cannot get out ofregister and the web is positively driven.

In order to further facilitate the positive driving of the webl thefollowing mechanism is provided. On the frame is located a fixed rod 234on which are fixed a pair? of ears 235. These ears carry a rod236pthrough which passes an` adjusting screw 237 for engaging a lever orarm 238 loose on the rod 234 and for adja-istin'g it about the rod. On astud 239 on this arm is journalled a flanged pulley 240; This pulley isprovided with ball bearings. Over this p ulley passes an endless rubberbelt 242V which also passes over a flanged: pulley 243 on af shaft 244.The belt Yholds theweb firmly against the forwarding wall 231. Thisshaft 244 ispositively driven from the' gealron the roll 231 by a gear245 and is mounted inball bearings 246 on the frame.

On the' other side of the impression mechanism the' roll 230 is locatedasv has been stated. This ismade' up' of a plurality of pulleys orcylinders fast on a' shaft 2496 Between any two-of these cylinders arotary' slitting. knife 250 can he: located. The webl 'is held againstthe surface of this roll by a plurality of hollow rolls 251`in whichrubber rolls 253 are mounted. These rolls 251 are driven by frictionalContact with the roll 230. I Each of these rolls 251 is mounted on anarm 255 adjustable about a shaft 256 by a Vscrew 257 in the same Inanneras described in connection with the pulley 240 and the-y hold the webagainst the forwarding roll 230.

Particular attention is directed to the relative locations of the rolls230 and 231 with respect tothe impression and printing cylinders. Theyare so located that the paper has only a slight bend about thein'ipression cylinders, that is, each pathway is deflected from astraight line only to the extent that will prevent thepaper contactingwith the printing plates until just after it has contacted with theimpression cylinders. yThis is for the purpose of avoiding theslapping;`

of the paper against the printing cylinder and sticking to the platesthereof on the one hand, and `to avoid wrapping the `paper around theimpression cylinders on the other hand, which is o-rdinarily done.

I bend the web pathway from a straight line only sufficient-ly to keepit off the type until the moment of printing, and to strip it from thetype immediately after print-- ing. In other words I permit theimpression and printing cylinders to do the work of printing in acleanly manner. but I do not permit the impression cylinder to takecharge 0f the web to any great extent, and thus I leave the webfree togo or come during the passage of the margins.

lhe objections to the usual practice are that when the blankets are toothick the cylinder will be over-diameter and the web will be fedtoofast, and when the blankets are old and thin the paper is fed tooslowly. When the web is wrapped around a cylinder it must conform to itssurface speed whether it be too fast or too slow. This brings strainsinto the paper and causes it to tear, unless a relatively high grade ofpaper is used. By avoiding this wrapping, the paper is neither advancednor retarded to as great a degree as heretofore, and fewer breaks willhappen, thus permitting the use of less eX- pensive paper and avoidingthe loss of valuable time. Moreover tlie margins of a blanket which liebetween the page surfaces invariably stand up above these suifaces, andif theJ web is wrapped around the cylinder these, by their abnormalheight, cause wriiikling of the web which sets up strains that result inbreaks. substantially eliminated by this plan.

The web pathway between two of the points of impression is equal inlength to a printed product or a multiple thereof, and the plate marginstransverse of the web coincide so that those of both couplessimultaneously pass their respective points of impression. Twice in eachrevolution therefore the paper will be free of any impression and atliberty to move relatively a littleforward or backward notwithstandingthe blankets are too thick or too thin. This prevents the forwarding oftoo much paper or too little, a result that could not be obtained withthe usual wrap around the impression cylinder, and margins that do notcoincide.

The plate cylinders are shielded by shields 260 at a point just beyondthe points of impression. These are so arranged that the web as itleaves the line of impression passes between the shields and impressioncylinders. These shields are provided with adjustable fingers 261 whichprotrude into the margins between the plates beneath the printing line.The object of this construction is to prevent the paper from adhering tothe inked plates and following them around the cylinders into the rollsin the case. of paper break. This avoids the `present great delays whichresult from expressed in the claims.

This danger is alsoy the winding' up of the paper on the inking rollsand the necessity for taking the rolls out aud picking off the paperbefore starting again. invention.

Although I have illustrated and described a preferred embodiment of theinvention described herein, I am aware of the fact that manymodifications can be made therein by any person skilled in the artwithout departing from the scope of the invention as Therefore I do notwish to be limited to all the details of construction herein shown anddescribed, but what I do claim iszl. In a perfecting printing press, thecoinbination of two printing couples each comprising an impression andaprinting cyliiider having the plate margins of the printing plates inposition to simultaneously pass their respective points of impression,whereby twice in every revolution the web will be free of any impressionand at liberty to move longitudinally, said perfecting printing couplesbeing so located that the web passes directly from contact with oneimpression cylinder to contact with the next impression cylinder in astraight line without deviation therefrom.

2. A rotary printing press containing two printing couples adapted tocooperate to perfeet a web, having printing plates so positioned thatthe transverse margins of both printing couples will simultaneously passtheir respective points of impression, and a substantially straight webpathway intermediate of the two points of impression equal in length toa printed product or to a multiple thereof, so that the web will bemomentarily free to mover longitudinally` when* said margins pass theirpoints of impression.

3. In a printing press, the combination with the printing mechanism, ofa forwarding roll made up of a shaft and a plurality of cylindersmounted on said shaft, and having spaces between them for receiving.slitting knives, and a roller having a yielding surface adapted toengage the web on the surfaces of two of said cylinders on both sides ofone of said spaces.

4. In a printing press, the combination with a printing couple, of aforwarding roll made up of a shaft and a plurality of cyliiiders mountedon said shaft and separated slightly to leave spaces for receivingslitting knives, and a roller having a yielding surface engaging the webon the surface of said roll closely adjacent to the edge of one of saidcylinders and to the space between them and theneXt one.

5. In a printing press, the combination with the impression mechanism,of a forwarding roll in position to receive the web This is an importantfeature of the directly therefrom, and a roller pressed against thesurface thereof having a plurality of small rubber rolls around itscircumference.

6. In a printing press, the combination with the impression mechanism,of a forwarding roll in position to feed the web directly thereto madeup of a shaft and a plurality of cylinders mounted on said shaft.

v7. In a perfecting web press, the co1nbination of two printing coupleshaving semi-cylindrical printing plates on their printing cylindersarrangedso that onev follows the other arranged to have their platemargins pass their respective points of impression simultaneously sothat at the instant when the plate margins pass their points ofimpression the web will be free of pressure at said points and atliberty to be moved a little longitudinally, with a substantiallystraight web pathway between said points. A

8. In a perfecting web press, the combination of two printing coupleshaving semicylindrical printing plates on their printing cylindersarranged so that one follows the other arranged to have the two platemargins on each printing cylinder pass their respective points ofimpression simultaneously twice during each revolution sothat at theinstant when the plate margins pass their points of impression the weblwill be free of pressure at said points and at liberty to be moved alittle longitudinally, the web Y.

pathway extending from one of said points to the other being free fromcontact with driven rolls or surfaces.

In testimony whereof I have hereunto affixed my signature.

HENRY A. wisE woon.L

